Originally Posted by
djsflynn
Launching in January 2023, the offer will be limited to “eligible Diamond members” – and while no more details are known at this stage, it’s worth reflecting that a similar one-time Diamond Status Extension in 2017 set the bar at a total of three years at Diamond status (those years did not have to be consecutive) with paid or reward stays of at least 250 nights
or an earning of more than 500,000 Base Points over the lifetime of their Hilton Honors membership.
More
at https://www.executivetraveller.com/n...extension-2023
AFAIK the "Diamond extension" is a permanent feature of Hilton Honors. It simply hasn't been needed for several years because of Hilton's generous COVID extension policies.